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Conotreta plana
Taxonomy
Conotreta plana was named by Cooper (1956). Its type specimen is USNM 109735b, a valve (pedicle valve), and it is a 3D body fossil.
Synonymy list
| Year | Name and author |
|---|---|
| 1956 | Conotreta plana Cooper p. 254 figs. Plate 16, F, figures 24-27 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
†Conotreta plana Cooper 1956
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| G. A. Cooper 1956 | Shell large for the genus, pedicle valve hemiconical in lateral profile; outline almost circular except for the flattened posterior margin. Angle formed by flattened area and anterior slope about 50° ; apical angle about 70°. Pseudointerarea broadly triangular, occupying more than half the width. Lateral slopes from pseudointerarea narrowly rounded. Pseudointerarea gently procline ; beak bent a little anterior to the plane of the pseudointerarea. |